Service difficulty report · Fire Warning · Boeing 737401

Difficulty date
July 22, 2009
Submitted
July 23, 2009
Operation
Air carrier
Aircraft
N405US
Make and model
Boeing 737401
Aircraft serial
23885
Part
Fire Warning
Condition
False Activation
Location
Apu Bay
Stage of operation
TX
How discovered
O
Nature of condition
N
Precautionary procedure
F

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

FLL - RECEIVED AN APU FIRE WARNING INDICATION. SHUTDOWN APU & DISCHARGED FIRE BOTTLE. APU EXHAUST FOUND TO HAVE FIRE DAMAGE BUT NO EXTERIOR DAMAGE OR EXTERNAL INDICATIONS OF FIRE FOUND. TWO MEL'S WERE APPLIED TO THE ACFT: 26-07A AND 49-01A. FLIGHT IS TO CONTINUE ONTO CLT. MAINTENANCE REMOVED AND REPLACED THE APU, MUFFLER AND EXTINGUISHER BOTTLE PER JOB CARD 03L70349006, 03L70349007, MM 49-81-31-401, MM 49-81-11-4-004-003 AND MM 26-22-11-864-021. CLEARED MEL'S. AIRCRAFT OK FOR SERVICE.